Lamp-burner.



PATENTBD JUNE 12, 1906.

M. O. AYER.

LAMP BURNER.- APPLIOATION FILED FEB. 6, 1906.

jnverzzor. W m

A} 4 w N Jitarngx MELVILLE C. AYER, OF BIDDEFORD, MAINE.

LAMP-BURNER.

Specification of Letters Patent.

Application filed February 6, 1906. Serial No. 299,849.

Patented June 12, 1906.

To all whom it may concern:

Be it known that I, MELVILLE O. AYER, a citizen of the United States,residing at Biddeford, in the county of York and State of Maine, haveinvented certain new and useful Improvements in Lamp-Burners, of whichthe following is a specification giving a full, clear, and exactdescription of the same.

The object of my invention is to provide a lamp-burner with an improveddevice for fastening the chimney securely in place from the inside andat the same time being adjustable to chimneys of different forms andlengths of base.

I am well aware that there are many devices for fastening chimneys fromthe inside by the use of spring-arms, levers, &c.; but it has been shownby practical use that they are all defective from the fact that theydepend for their efficiency upon a uniform length of the bottom orstraight part of the chimney. It is also shown that the chimneys foundin the market vary in the length of said straight parts at the bottom.Conse quently a fastening device that will adapt itself to a certainform of chimney becomes inoperative when one with a longer or shorterbase is substituted. Furthermore, it has been shown that the spring-armsof similar devices heretofore produced soon break off at the point ofconnection with the base of the burner, caused by the alternatingtension at that point during the operation of putting the chimney on andoff. Other devices of this class also require some peculiar oradditional movement to place the chimney in position, thereby causinginconvenience and loss of time. In my invention I eliminate theseobjectionable features by the peculiar form of the spring-arms employed,as will hereinafter be described, and pointed out in the claim.

Reference is to be had to the accompanying drawings, in which similarletters refer to like parts.

Figure 1 is a perspective view of a burner in combination with myinvention. Fig. 2 is a central longitudinal section of the same with thechimney in place, showing the position of the spring-arms while engagedover the shoulder of a chimney with a long base. Fig. 3 is the same asFig. 2, but shows the position of spring-arms while engaged over theshoulder of a chimney with a short base.

In Fig. 1, A is the base of the burner B, the cap or dome. a a a a arespring-arms attached to said base and forming a part thereof, said armshaving one or more spiral turns C near the point of attachment with saidbase, said arms extending to D, thence by short turns outward to E,preferably at obtuse angles, thence by short turns inward, preferably atacute angles, the extension of the said second turns terminating atpoints F, the diameter of the circle of which is less than the diameterof the straight part at the bottom of the chimney the burner is tocarry.

The object of the loops or turns in the arms near their intersectionwith the base is to relieve the strain, and thereby prevent theirbreaking at that point. The peculiar form of the spring-ar'ms at D and Eallows them to engage at the point E with the chimney upon some part ofitsangular portion G, thereby adapting themselves to chimneysof'diiferent lengths of base. The extension of the arms inward to pointsconsiderably less than the diameter of the base of the chimneysimplifies the operation of placing the chimney in position, making itconvenient to do so, even in the dark.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 7 In a lamp-burner the combination with the same ofspring-arms attached to the base and forming a part of said burner, saidspring-arms having spiral turns near the point of attachment of saidarms with said base, said arms extending vertically said verticalportions terminating in bends outward at obtuse angles, the extension ofsaid bends terminating in bends inward at acute angles, the extension ofsaid second bends terminating at points the diameter of the circle ofwhich is less than the diameter of the base of the chimney that theburner is to carry, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

MELVILLE O. AYER.

Witnesses:

JosEPH ETOHELLS, Jr., 1 JAMES BURNIE.

